Voltage hysteresis and heat generation behavior in lithium-ion batteries

摘要

In order to characterize the heat generation behavior of a lithium-ion cell during charge and discharge, calorimetry has been caried out. The influence of past treatments applied to the cell is examined baed on heat generation. The test cell shows a voltage hysteresis during charge and discharge, and the heat generation behavior is related to this hysteresis. A hard carbon is used in the cell as the negative electrode material, and the hysteresis mechanism and heat generation are discussed based on the reactions in the hard carbon electrode.